/* ===== 深色青橙 · 极简无阴影 · 纯描边分割 ===== */
        :root {
            --primary: #22d3ee;
            --accent: #fb923c;
            --bg: #0f172a;
            --text: #e2e8f0;
            --border: rgba(34, 211, 238, 0.25);
            --card-bg: rgba(30, 41, 59, 0.3);
        }

        * { border-radius: 0 !important; }

        body {
            background-color: var(--bg);
            color: var(--text);
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            letter-spacing: 0.01em;
            overflow-x: hidden;
        }

        /* 大标题圆体感 */
        h1, h2, .display-1, .display-2, .hero-title {
            font-weight: 800;
            letter-spacing: -0.02em;
            font-family: 'Inter', 'Comic Sans MS', 'Chalkboard SE', cursive, sans-serif;
        }

        /* 波浪/斜切分割边界 */
        .section-divider-wave {
            position: relative;
            width: 100%;
            height: 60px;
            margin-top: -1px;
        }
        .section-divider-wave svg {
            display: block;
            width: 100%;
            height: 60px;
            fill: var(--bg);
        }

        /* 导航栏 */
        .navbar {
            background: rgba(15, 23, 42, 0.9);
            backdrop-filter: blur(8px);
            border-bottom: 2px solid var(--border);
            padding: 0.6rem 1rem;
        }
        .navbar-brand {
            font-weight: 900;
            font-size: 1.8rem;
            color: var(--primary) !important;
            letter-spacing: 1px;
        }
        .navbar-nav .nav-link {
            color: var(--text);
            font-weight: 500;
            padding: 0.5rem 1.2rem;
            transition: color 0.2s;
            border-bottom: 2px solid transparent;
        }
        .navbar-nav .nav-link:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }

        /* Hero打字机 */
        .typewriter-wrapper {
            min-height: 5rem;
            display: flex;
            align-items: center;
        }
        .typewriter {
            font-size: clamp(2.8rem, 10vw, 4.5rem);
            font-weight: 900;
            color: var(--primary);
            border-right: 3px solid var(--accent);
            padding-right: 8px;
            animation: blink 0.8s step-end infinite;
            white-space: nowrap;
            overflow: hidden;
            max-width: 100%;
        }
        @keyframes blink { 50% { border-color: transparent; } }

        /* 对比表格 */
        .table-compare {
            width: 100%;
            border-collapse: collapse;
            font-weight: 500;
        }
        .table-compare th, .table-compare td {
            padding: 1.2rem 1.5rem;
            border: 1px solid var(--border);
            background: transparent;
            text-align: center;
        }
        .table-compare thead th {
            color: var(--primary);
            font-size: 1.4rem;
            border-bottom: 2px solid var(--primary);
        }
        .table-compare .highlight-col {
            background: rgba(251, 146, 60, 0.08);
            border-color: var(--accent);
        }

        /* 特色卡片网格 */
        .feature-card {
            background: transparent;
            border: 1px solid var(--border);
            padding: 1.8rem 1.5rem;
            height: 100%;
            transition: transform 0.2s ease, border-color 0.2s;
        }
        .feature-card:hover {
            transform: scale(1.02);
            border-color: var(--accent);
        }
        .feature-icon {
            font-size: 2.4rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }

        /* 步骤条 (横向时间线) */
        .step-timeline {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            position: relative;
            margin-top: 2rem;
        }
        .step-timeline::before {
            content: '';
            position: absolute;
            top: 20px;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(to right, var(--primary), var(--accent));
            opacity: 0.4;
        }
        .step-item {
            background: var(--bg);
            border: 1px solid var(--border);
            padding: 1.5rem 1.2rem;
            width: 22%;
            text-align: center;
            position: relative;
            z-index: 2;
            transition: border-color 0.2s;
        }
        .step-item:hover { border-color: var(--accent); }
        .step-num {
            display: inline-block;
            width: 40px;
            height: 40px;
            line-height: 38px;
            border: 2px solid var(--primary);
            color: var(--primary);
            font-weight: 800;
            font-size: 1.4rem;
            background: var(--bg);
            margin-bottom: 1rem;
        }

        /* FAQ手风琴 纯描边 */
        .faq-item {
            border: 1px solid var(--border);
            margin-bottom: 1rem;
            background: transparent;
        }
        .faq-question {
            background: transparent;
            border: none;
            padding: 1.2rem 1.5rem;
            font-weight: 600;
            font-size: 1.1rem;
            color: var(--text);
            text-align: left;
            width: 100%;
            border-bottom: 1px solid transparent;
        }
        .faq-question:focus { outline: none; }
        .faq-item[open] .faq-question { border-bottom-color: var(--border); }
        .faq-answer {
            padding: 1rem 1.5rem 1.5rem;
            color: #cbd5e1;
        }

        /* CTA */
        .cta-section {
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            background: rgba(34, 211, 238, 0.03);
        }

        /* 数字滚动 */
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent);
        }

        /* 图片占位渐显 */
        .lazy-img {
            background: linear-gradient(145deg, #1e293b, #0f172a);
            transition: opacity 0.3s;
            width: 100%;
            height: auto;
        }

        /* 友情链接 */
        .friend-links a {
            color: var(--primary);
            margin: 0 0.8rem;
            text-decoration: none;
            border-bottom: 1px dotted;
        }

        /* footer */
        footer {
            border-top: 1px solid var(--border);
            background: #0b1120;
        }

        /* 通用 */
        .border-line { border: 1px solid var(--border); }
        .btn-outline-primary-custom {
            border: 2px solid var(--primary);
            color: var(--primary);
            padding: 0.6rem 2rem;
            background: transparent;
            transition: 0.2s;
        }
        .btn-outline-primary-custom:hover {
            background: var(--primary);
            color: #0f172a;
        }

/* --- 子页面追加 --- */
.about-hero {
            position: relative;
            padding: 5rem 0 4rem;
            background: radial-gradient(ellipse at 20% 50%, rgba(34, 211, 238, 0.08) 0%, transparent 50%), radial-gradient(ellipse at 80% 20%, rgba(251, 146, 60, 0.05) 0%, transparent 40%);
        }
.about-hero .badge-new {
            display: inline-block;
            background: rgba(34, 211, 238, 0.15);
            border: 1px solid var(--border);
            color: var(--primary);
            padding: 0.35rem 1.2rem;
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 1.2rem;
        }
.about-hero h1 {
            font-size: clamp(2rem, 5vw, 3.2rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.5px;
            margin-bottom: 1rem;
        }
.about-hero h1 span {
            background: linear-gradient(135deg, var(--primary) 0%, #38bdf8 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
.about-hero .lead-text {
            font-size: 1.1rem;
            color: rgba(226, 232, 240, 0.8);
            max-width: 720px;
            margin: 0 auto 2rem;
            line-height: 1.8;
        }
.about-stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            justify-content: center;
            margin-top: 2.5rem;
        }
.about-stat {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 1.5rem 2rem;
            min-width: 160px;
            text-align: center;
            backdrop-filter: blur(8px);
        }
.about-stat .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            display: block;
        }
.about-stat .label {
            font-size: 0.85rem;
            color: rgba(226, 232, 240, 0.6);
            margin-top: 4px;
        }
.about-section-title {
            font-size: 1.8rem;
            font-weight: 700;
            letter-spacing: -0.3px;
            margin: 3rem 0 1.5rem;
            position: relative;
            padding-left: 1.2rem;
        }
.about-section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 5px;
            height: 70%;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            border-radius: 4px;
        }
.about-card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
            margin: 1.5rem 0 2.5rem;
        }
.about-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 1.8rem 1.5rem;
            transition: transform 0.3s ease, border-color 0.3s ease;
        }
.about-card:hover {
            transform: translateY(-4px);
            border-color: var(--primary);
        }
.about-card .icon-box {
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }
.about-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
            color: var(--text);
        }
.about-card p {
            font-size: 0.92rem;
            line-height: 1.7;
            color: rgba(226, 232, 240, 0.75);
        }
.timeline-wrap {
            border-left: 2px solid var(--border);
            margin-left: 8px;
            padding-left: 2rem;
            margin: 2rem 0;
        }
.timeline-item {
            position: relative;
            padding-bottom: 2.2rem;
        }
.timeline-item::before {
            content: '';
            position: absolute;
            left: -2.4rem;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.2);
        }
.timeline-item .year {
            font-weight: 700;
            color: var(--primary);
            font-size: 0.95rem;
            letter-spacing: 1px;
        }
.timeline-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin: 0.3rem 0 0.4rem;
        }
.timeline-item p {
            font-size: 0.9rem;
            color: rgba(226, 232, 240, 0.7);
            line-height: 1.7;
            margin: 0;
        }
.about-quote {
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.08), rgba(251, 146, 60, 0.06));
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 2.5rem 2rem;
            text-align: center;
            margin: 2.5rem 0;
        }
.about-quote i {
            color: var(--accent);
            font-size: 1.5rem;
            margin-bottom: 1rem;
            display: block;
        }
.about-quote blockquote {
            font-size: 1.25rem;
            font-weight: 500;
            font-style: italic;
            color: rgba(226, 232, 240, 0.9);
            max-width: 700px;
            margin: 0 auto;
            line-height: 1.8;
        }
.about-quote .quote-author {
            margin-top: 1.5rem;
            font-size: 0.9rem;
            color: var(--primary);
            font-weight: 600;
        }
.about-cta {
            text-align: center;
            padding: 3rem 0 1rem;
        }
.about-cta .btn-outline-primary-custom {
            margin-top: 1rem;
        }

/* --- 子页面追加 --- */
/* 本页专属样式 */
        .disclaimer-section { padding: 60px 0; }
.disclaimer-title { color: var(--primary); font-weight: 700; margin-bottom: 25px; }
.disclaimer-text { color: var(--text); line-height: 1.8; margin-bottom: 20px; }
.disclaimer-list { color: var(--text); line-height: 1.8; padding-left: 20px; }
.disclaimer-list li { margin-bottom: 10px; }
.disclaimer-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 12px; padding: 30px; margin-bottom: 25px; }
.disclaimer-icon { color: var(--accent); font-size: 2rem; margin-bottom: 15px; }
.highlight-text { color: var(--primary); font-weight: 600; }
.last-updated { color: rgba(226, 232, 240, 0.6); font-size: 0.9rem; }

/* --- 子页面追加 --- */
.privacy-section {
            padding: 80px 0;
        }
.privacy-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 2.5rem;
            margin-bottom: 2rem;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
.privacy-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(34, 211, 238, 0.1);
        }
.privacy-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 1.2rem;
        }
.privacy-card h3 {
            color: var(--primary);
            font-size: 1.4rem;
            font-weight: 600;
            margin-bottom: 1.2rem;
            letter-spacing: -0.02em;
        }
.privacy-card p {
            color: var(--text);
            line-height: 1.8;
            font-size: 0.95rem;
            opacity: 0.9;
        }
.privacy-card ul {
            color: var(--text);
            padding-left: 1.2rem;
            line-height: 1.8;
            font-size: 0.95rem;
        }
.privacy-card li {
            margin-bottom: 0.5rem;
        }
.privacy-card strong {
            color: var(--accent);
        }
.privacy-badge {
            display: inline-block;
            background: rgba(34, 211, 238, 0.15);
            color: var(--primary);
            border: 1px solid rgba(34, 211, 238, 0.3);
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.8rem;
            margin-bottom: 1rem;
        }
.privacy-divider {
            border: none;
            border-top: 1px solid var(--border);
            margin: 2rem 0;
        }
.privacy-table {
            width: 100%;
            color: var(--text);
            font-size: 0.9rem;
        }
.privacy-table th {
            color: var(--primary);
            border-bottom: 2px solid var(--border);
            padding: 0.8rem;
            font-weight: 600;
        }
.privacy-table td {
            border-bottom: 1px solid rgba(34, 211, 238, 0.1);
            padding: 0.8rem;
            line-height: 1.6;
        }
.privacy-table tr:hover td {
            background: rgba(34, 211, 238, 0.05);
        }